Every 2 minutes, Sungjong's phone just keep ringing and receives a calls from that 'unknown' number. Sungjong getting fep up with it. Once more, his phone rings and this time he's going to answer the call. He slides his thumb on the screen and takes the call. "Hello? Yeoboseyo? Who's there?" Then he recognize that voice..... Here come the flasback~ 

"Snow is white..... White is plainHere come the spring, add colours to the pale" A short encounter between Minhyuk and a little boy....